Home / 81,045.24-111,889.26-61,773.72

Finding the Fourth Proportional to 81,045.24, 111,889.26 and 61,773.72

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Solution

The fourth proportional to 81,045.24, 111,889.26 and 61,773.72 is: 85,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.24 : 111,889.26 = 61,773.72 : x
  2. Step 2: Convert to fraction form
    81,045.24/111,889.26 = 61,773.72/x
  3. Step 3: Cross multiply
    81,045.24x = 111,889.26 × 61,773.72
  4. Step 4: Simplify right side
    81,045.24x = 6,911,815,818.25
  5. Step 5: Solve for x
    x = 6,911,815,818.25/81,045.24
  6. Step 6: Final answer
    x = 85,283.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.